Two-Stage Game: Introduction

This program sets up a two-player, two-stage game in which
one player moves first and the other follows.
It is possible to control the information that the second mover has
about the other player's prior decision. In particular, the first-mover's decisions are partitioned
into information sets, with the number of second-mover decisions varying from one information
set to another.

For a discussion of payoff factors that may generate intuitive deviations from such predictions, see Goeree and Holt (2001) "Ten Little Treasures of
Game Theory and Ten Intuitive Contradictions," American Economic Review
December 2001 (91) pp.1402-1422. The default settings implement a pair of games from that paper.